On Sunday, 1 June 2014 at 12:45:26 UTC, bearophile wrote:
It's a bad question.
Actually, Martin's question is a good one.
Initializing a variable of type float via a literal or as
conversion from string should be the same, exacly, always.
Casting a float to double should be deterministic as
float a = 1.234f;
float b = to!float("1.234");
assert (a == b);
assert (a == to!float("1.234")); // is allowed to fail due to
constant folding
On Sunday, 1 June 2014 at 15:31:53 UTC, Martin Krejcirik wrote:
On 1.6.2014 16:42, Famous wrote:
from string should be the same, exacly, always. Casting a
float to
double should be deterministic as well.
void main()
{
float a = 1.234f;
double b = 1.234;
assert (a == cast(float) b)
I have compiled some cases at
http://dpaste.dzfl.pl/5611b8bce8e3
This implies that floating-point constants do not have fixed but
minimum precision. Particularly, the literal 1.23 describes a
floating-point value with either double or real precision
depending on what it is compared to.
Thi
